Nice chapter, but if he is not content with the country he is in why can't he go to a better one? And maybe I'm wrong but you can't climb the wall of a country it should be a city inside the country no? or I have missed something?
This guy doesn't really give me the assassin vibes, I mean after all these years being an assassin he should normally know how to keep his cool, but he look more like some random otakus who get isekaid
I liked it but in the paragraph where you say that those who died passed the academy test, I don't understand, did they die? or Did they die but were still alive like an immortal mutant?